Smoke-consuming furnace.



. PATBNTED JUNE 26, 1906.

0. G. MARK.

'SMOKE CONSUMING FURNACE; APPLIOATION FILED NOV.27,1905 2 sums-sum 1.

l J l 1 I qwi meaoeo rd: NDRRIS PETE R5 co. WASHINGTON, n. c.

No. 824,497. PATENTED JUNE 26, 1-906.

' 0. e. MARK. SMOKE GONSUMING FURNACE.

APPLICATION FILED NOV. 27, 1905.

2 BHEETS-SHEET 2.-

Witmooeo N v n1: nonms PETERS qa, WASHINGTDN, n. c.

UNITED s'rnrns PATENT OFFICE.

SMOKE-CONSUMBNGIFURNACE.

Specification of Letters Patent. Y Application filed November 27, 1905. Serial No. 289,217.

Patented June 26, 1906.

Toni? it may concern.-

at it iniown that I, CYRUs G. MARK, a citi-v zen of the United States, residing at Robesonia, in the county of Berks and State of Pennsylvania, have invented certain new and usefullnrprovementsin Smoke-Consuming Furnaces; and I do hereby declare the following to be a full, clear, and exact descri tion of the invention, such as will enable othersskilled in the art to which it appertains to make and use the same.

My invention relates to steam-boiler furnaces, has especial reference to that class of furnaces designed to consume the smoke aris ng from the combustion of fuel and reduce its emission from the smoke-stack to a minimum. i

The invention consists in certain im rovements in construction, which will be fully disclosed in the following specification and claims.

In the accompanying drawings, which form I part of this specification, Figure 1 represents a vertical'longitudinal section of a furnace embodying my invention, the boiler and smoke-stack being shown in side elevation;

Fig. 2, a top plan view of the furnace on-line 1 tion.

2 2, Fig. 1 Fig. 3, a vertical transverse section on line 3 3., and Fig. 4 a like view on line 4 4. o

Reference being had to the drawin -s, and the designating characters ther on,- t e numeral 1 indicates a boiler, whic may be of any referred type or form; 2, the front wall I of t e furnace; 3, the furnace 'or primary combustion-chamber, having grate-bars 4; 5, the ash-pit; 6, the o ening through which fuel is suppliedto the ace; 7, the opening through which ashes are removed from the ash-pit, each of which openings are ro'vided with suitable doors, 8 9, res ective y. The furnace as described is of or inary construc- 10 indicates the bridge-wall; 111, a secondary combustion-chamber having a bottom of firebrick 12,,provided with numerous unobstructed openings 13, resembling checkerwork in a metallurgical furnace, and these openings extend throughout the area of the bottom 12, and at the rear end of said chem-- ber is a solid or imperforate wall-14, which extends up to the boiler 1 and revents any of the binning gases passing sai chamber 11, except through openings 12 into the suplemental combustion-chamber 15 under or deneath thecharc'ter 1'2.

and increasing the combustion. sage of the products of combustion through the openin s13 the walls of the o enings befuel are deposited by gravity and subse-- quently removed therefrom through an opening 22, having a door 23.

Adjacent to the bridge-wall 10 is a transverse chamber. 24, into which air or airand steam is conducted, and forms a .comminglinge chamber for the air and the steam and is provided with openings in its top, through which oxygen or oxygen and hydrogen from the chamber 24 is dlscharged into the chamber 11 and commingles with the gases or products of combustion therein, stimulating In the pascome hig yheated, and the car onicoxid and the smoke coming in contact therewith are neutralizedand consumed.

The chamber 24 is supplied with steam from the boiler througha pipe'25, provided with a sto -cock 25, and with atmospheric air throng pi e 26, the two mixing in the latter ipe an are heated in their passage throng the supplemental combustion-chamber 15 on their way to the chamber 24. Af-

ter leaving the chamber 21 the gases pass forward through the tubes 27 of the boiler to the uptake 28 and the smoke-stack 29;

30 indicates ,ancrdinary blow-off pipe for discharging the contents of the boiler.

The c eckers may be cleaned in the usual wayby directing steam thereon to blow out the dust, and the wall 1 is provided with means (not shown) for th removal of ashes and dust from the chamber 15. Having thus fully described my invention, what I claim is- 1. In a smoke-consuming furnace, a boiler, a secondary combustion-chamber, a supplemental combustion-chamber below the secondary chamber, means of communication between the two chambers conslsting of a erfo'rated wall adapted to become highly heated and neutralize the carbonic oxid, an imperforate wall of masonry forming the rear end of the combustion-chamber and ex tending to the boiler, and means for sup ly-' -tional combustion-chamber in rear of both of sa ld chambers, means of communication between the lower part of the secondary chamber and the upper part of the supplemental chamber consisting of a perforated wall adapted to be brought to a state of incandescence, an imperforate wall of masonry extending to the boiler' and forming the rear end of the secondary combustion-chamber, and an air-chamber intermediate the furnace and the secondary combustion chamber provided with openings in the top thereof communicating with said secondarycombirstionchamber.

3. In a smoke-consuming furnace, a boiler, a furnace, a secondar combustion-chamber,

a supplemental c'om ustion-chamber under the secondary comb'ustiomchamber, an additional combustiomchamber in rear of both of said chambers, means of communication between the lower part of the secondary chamher and the upper part of the supplemental chamber consisting of a perforated wall adapted to be brought to a state of incandescence, an im erforate wall of masonry extending to the oiler and forming the rear end of the secondary combustion-chamber, an air-chamber intermediate the furnace and the secondary combustion-chamber provided with openings in the top thereof communicating with said secondary combustion-chamher, and an air-su ply pipe extending from the rear end of t e structure, through the supplemental combustion-chamber and. heated by the gases therein, and discharging into the air-chamber.

In testimony whereof I affix my signature in presence of two witnesses.

CYRUS G. MARK.

Witnesses v DANIEL J. MOYER, JOHN H. ANDERSON. 

